Re: Frozen callback.

[Sietse Brouwer <sbbrouwer@gmail.com>]

Hello, Andre!

Andre Caldas wrote:
>>     function document.MyCharacterMess(str,filename)
>
> What is this "str"?

This is a function that takes two variables; the first one it calls
'str', the second one 'filename'. Example:
function f(a, b)
   return a/b
end
function(8,2) --> 4, not 0.25

I do not know what sort of str and filename are being passed to
document.MyCharacterMess. (To all the action functions in
utilities.sequencers.appendaction, in fact).

>>         if file.nameonly(filename) == "ward" then
>>             str = table.concat(string.totable(str,"."), " + ")
> What is this doing?

file.nameonly strips path and extenstion, e.g.
file.nameonly('a/b/cod.doc') returns 'cod'.

You can see the file.* functions in l-file.lua.

string.totable splits a string, and returns the pieces as an array. In
this case, the string is split at the periods.
table.concat combines a table into a string, optionally putting a
string (" + ", in this case) where the pieces join.
so the `str = ...` line turns
"Hello. I am Sam. You are also Sam."
into
"Hello +  I am Sam +  You are also Sam"
or "hello.txt" into "hello + txt"

> Why is "document.MyCharacterMess" a string? Isn't it less error-prone
> to use the function itself, instead of its name?

No idea.

Cheers, and good luck,
Sietse
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